If Sony purchases Activision Blizzard, Microsoft has promised to keep Call of Duty available on PlayStation for several more years.
According to a report by The Verge, Microsoft gaming head Phil Spencer promised to guarantee Call of Duty on PlayStation, with feature and content equalities, for at least several years beyond the current Sony contract.
Spencer has already made several public comments to the same general effect, noting the importance of the PlayStation community to Call of Duty, and comparing the game to Minecraft, which Microsoft has maintained since its acquisition of Mojang in 2014. However, this is the first such statement to guarantee the availability of Call of Duty on PlayStation beyond the limitations of existing agreements, however vague.
Microsoft is attempting not to portray its acquisition of Activision Blizzard as anti-competitive, as it is being closely scrutinized by governments across the world. So this is one leak Spencer and his team will have been quite happy to confirm.
Spencer announced for the first time that Call of Duty games would be available on Xbox subscription service, Game Pass, according to other competitors. It's quite probable this would still be a significant difference for Microsoft as it strives to extend the concept of game platforms beyond the hardware used to play games in the home.